Wall sconce



FIG. 1 is a perspective view of a wall sconce in accordance with the new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right elevational view thereof;

FIG. 4 is a left elevational view thereof; and,

FIG. 5 is a bottom view thereof.

The broken lines in the figures are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a wall sconce, as shown and described. 